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How to look up a symbol?
I was surprised to learn How to write “ä” and other umlauts and accented letters in bibliography?. Our BibTeX database consists of entries in the latin-1 encoding, which means that, to do it properly, the accented characters will have to be converted to the format suggested in the linked question: {\"a} for ä, {\^e} for ê, {\`i} for ì and so on.
Where can I find a comprehensive list of these escaped characters?